<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>v-mode</title>
</head>
<body>
    <div id="app">
        <input type="button" value="修改message" @click="setMessage">
        <input type="text" v-model="message" @keyup.enter="getMessage">
        <!-- 使用v-mode的数据是双向的 -->
        <h2>{{message}}</h2>
    </div>
<!-- 开发环境版本，包含了有帮助的命令行警告 -->
<script src="https://cdn.jsdelivr.net/npm/vue@2/dist/vue.js"></script>
<script>
    var app = new Vue({
        el:"#app",
        data:{
            message:"黑马程序员"
        },
        methods:{
            getMessage:function(){
                alert(this.message)
            },
            setMessage:function(){
                this.message="白马程序员"
            }
        }
    })
</script>
</body>
</html>